title: Glass transition temperature and topological constraints of sodium borophosphate glass-forming liquids.
abstract: Sodium borophosphate glasses exhibit intriguing mixed network former effect, with the nonlinear compositional dependence of their glass transition temperature as one of the most typical examples. In this paper, we establish the widely applicable topological constraint model of sodium borophosphate mixed network former glasses to explain the relationship between the internal structure and nonlinear changes of glass transition temperature. The application of glass topology network was discussed in detail in terms of the unified methodology for the quantitative distribution of each coordinated boron and phosphorus units and glass transition temperature dependence of atomic constraints. An accurate prediction of composition scaling of the glass transition temperature was obtained based on topological constraint model.
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Jiang
authors.forename: Huidan
authors.initials: H
authors.lastname: Zeng
authors.forename: Zhao
authors.initials: Z
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Ren
authors.forename: Guorong
authors.initials: G
authors.lastname: Chen
authors.forename: Zhaofeng
authors.initials: Z
authors.lastname: Wang
authors.forename: Luyi
authors.initials: L
authors.lastname: Sun
authors.forename: Donghui
authors.initials: D
authors.lastname: Zhao